I'm so sorry for the way your mom has messed up her life with bad decisions. I also think it's wrong for your mom to expect you to take on the roll of psychiatric adviser to her. I'm not sure if she expects you to or you've just taken on that role yourself. The only thing I can suggest is that you try to get your mom to narcotics anonomous or some type of support group and even if she's not willing to go, you need to get yourself to nar-anon or whatever the name of the program is that parallels al-anon, which is for families of alcoholics/drug abusers. They can help give you the support you need and make you realize that this is not your burden to carry.